ok, what we have here is a master cool portable cooler. Has a hose fitting, but can be converted to compression fitting. its the mnb10 model. about 2 years old, works great, no damage, very clean pads. Stored dry and indoors when not in use. 110v. will cool to about 1000 sqft.

it's the little one in the picture, but little is a misnomer it measures about 32" high and 26" square.